PSI - Issue 24

Available online at www.sciencedirect.com Available online at www.sciencedirect.com Available online at www.sciencedirect.com

ScienceDirect

Procedia Structural Integrity 24 (2019) 888–897 Structural Integrity Procedia 00 (2019) 000–000 Structural Integrity Procedia 00 (2019) 000–000

www.elsevier.com / locate / procedia www.elsevier.com / locate / procedia

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the AIAS2019 organizers Abstract The new Composite Bolted Joint Element (CBJE) is applied to the FE analysis of a single-lap, single-bolt composite bolted joint, allowing for important reductions of the computational burden while maintaining remarkable accuracy of results. The CBJE is a user-defined finite element representative of the elastic behavior of the region comprising the bolted joint and a portion of the surrounding composite plates. This modeling approach exploits radially disposed beam-shaped elements whose sti ff ness matrix is defined according to the analytical solution of the theoretical reference model of composite bolted joints, previously attained by the authors. This allows establishing the structural equivalence between the FE model and the theoretical reference model of the joint. A comparative investigation between a full detailed 3D FE model and a shell one featuring the CBJE of the single-lap joint is presented. It demonstrates the capabilities of the CBJE to synthesize low simulation time requirements and outcomes exactness. c 2019 The Authors. Published by Elsevier B.V. is is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) r-review lin : Peer-rev ew und r responsibility of the AIAS2019 organizers. Keywords: rectilinear orthotropic composite material; circular plates; bolted connections AIAS 2019 International Conference on Stress Analysis FE analysis of single-bolt composite bolted joint by means of a simplified modeling technique Valerio G. Belardi a, ∗ , Pierluigi Fanelli b , Francesco Vivio a a Department of Enterprise Engineering - University of Rome Tor Vergata, Via del Politecnico, 1, 00133, Rome, Italy b Department of Economics, Engineering, Society and Business Organization, University of Tuscia, Largo dell’Universita` , 01100 Viterbo, Italy Abstract The new Composite Bolted Joint Element (CBJE) is applied to the FE analysis of a single-lap, single-bolt composite bolted joint, allowing for important reductions of the computational burden while maintaining remarkable accuracy of results. The CBJE is a user-defined finite element representative of the elastic behavior of the region comprising the bolted joint and a portion of the surrounding composite plates. This modeling approach exploits radially disposed beam-shaped elements whose sti ff ness matrix is defined according to the analytical solution of the theoretical reference model of composite bolted joints, previously attained by the authors. This allows establishing the structural equivalence between the FE model and the theoretical reference model of the joint. A comparative investigation between a full detailed 3D FE model and a shell one featuring the CBJE of the single-lap joint is presented. It demonstrates the capabilities of the CBJE to synthesize low simulation time requirements and outcomes exactness. c 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review line: Peer-review under responsibility of the AIAS2019 organizers. Keywords: rectilinear orthotropic composite material; circular plates; bolted connections AIAS 2019 International Conference on Stress Analysis FE analysis of single-bolt composite bolted joint by means of a simplified modeling technique Valerio G. Belardi a, ∗ , Pierluigi Fanelli b , Francesco Vivio a a Department of Enterprise Engineering - University of Rome Tor Vergata, Via del Politecnico, 1, 00133, Rome, Italy b Department of Economics, Engineering, Society and Business Organization, University of Tuscia, Largo dell’Universita` , 01100 Viterbo, Italy

1. Introduction 1. Introduction

The finite element analysis of joints represents an arduous aspect of dealing with in mechanical design both from the modeling and the computational point of views, because of the di ff erent components comprising the joint and the numerous issues that a reliable simulation must take into account. Among the possibilities of mechanical joints, these considerations particularly regard composite bolted joints. Many works in the scientific literature debate this topic and, in this regard, papers concern diverse subjects in the field of composite bolted joints analysis, such as: analytical description of shear behavior (Kou et al. (2018); Zhao et al. (2019)), numerical assessment of failure behavior (Mandal and Chakrabarti (2015); Hu et al. (2018b)), experimental studies (Giannopoulos et al. (2017); Hu et al. (2018a)) and finite element analysis of joints (Chowdhury et al. (2016)). The finite element analysis of joints represents an arduous aspect of dealing with in mechanical design both from the modeling and the computational point of views, because of the di ff erent components comprising the joint and the numerous issues that a reliable simulation must take into account. Among the possibilities of mechanical joints, these considerations particularly regard composite bolted joints. Many works in the scientific literature debate this topic and, in this regard, papers concern diverse subjects in the field of composite bolted joints analysis, such as: analytical description of shear behavior (Kou et al. (2018); Zhao et al. (2019)), numerical assessment of failure behavior (Mandal and Chakrabarti (2015); Hu et al. (2018b)), experimental studies (Giannopoulos et al. (2017); Hu et al. (2018a)) and finite element analysis of joints (Chowdhury et al. (2016)).

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the AIAS2019 organizers 10.1016/j.prostr.2020.02.078 ∗ Corresponding author. Tel.: + 39 06 72597143. E-mail address: valerio.belardi@uniroma2.it 2210-7843 c 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review line: Peer-review under responsibility of the AIAS2019 organizers. ∗ Corresponding author. Tel.: + 39 06 72597143. E-mail address: valerio.belardi@uniroma2.it 2210-7843 c 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review line: Peer-review under responsibility of the AIAS2019 organizers.